Initial import: WebAisMap

Closes TG-4

Co-authored-by: Cursor <cursoragent@cursor.com>

terminal.py

@@ -0,0 +1,92 @@
+import os
+import json
+import struct
+import signal
+import select
+import threading
+
+
+def _pty_set_winsize(fd, rows, cols):
+    import fcntl
+    import termios
+
+    winsz = struct.pack("HHHH", int(rows), int(cols), 0, 0)
+    fcntl.ioctl(fd, termios.TIOCSWINSZ, winsz)
+
+
+def terminal_session(ws):
+    """PTY + bash, обмен через WebSocket (как ttyd, но на том же порту что и Flask)."""
+    import pty
+
+    pid, master_fd = pty.fork()
+    if pid == 0:
+        os.environ.setdefault("TERM", "xterm-256color")
+        os.environ.setdefault("SHELL", "/bin/bash")
+        try:
+            os.execvp("/bin/bash", ["/bin/bash"])
+        except OSError:
+            os.execvp("/bin/sh", ["/bin/sh"])
+        os._exit(127)
+
+    relay_done = threading.Event()
+    ws_lock = threading.Lock()
+
+    def relay_out():
+        try:
+            while not relay_done.is_set():
+                r, _, _ = select.select([master_fd], [], [], 0.25)
+                if master_fd not in r:
+                    continue
+                try:
+                    chunk = os.read(master_fd, 65536)
+                except OSError:
+                    break
+                if not chunk:
+                    break
+                try:
+                    with ws_lock:
+                        ws.send(chunk)
+                except Exception:
+                    break
+        finally:
+            relay_done.set()
+
+    t = threading.Thread(target=relay_out, daemon=True)
+    t.start()
+
+    try:
+        while True:
+            msg = ws.receive()
+            if msg is None:
+                break
+            if isinstance(msg, str) and msg.startswith("{"):
+                try:
+                    j = json.loads(msg)
+                    if j.get("type") == "resize":
+                        r, c = int(j.get("rows") or 24), int(j.get("cols") or 80)
+                        if r > 0 and c > 0:
+                            _pty_set_winsize(master_fd, r, c)
+                        continue
+                except (json.JSONDecodeError, TypeError, ValueError, KeyError):
+                    pass
+            if isinstance(msg, str):
+                msg = msg.encode("utf-8", errors="replace")
+            try:
+                os.write(master_fd, msg)
+            except OSError:
+                break
+    finally:
+        relay_done.set()
+        try:
+            os.close(master_fd)
+        except OSError:
+            pass
+        try:
+            os.kill(pid, signal.SIGTERM)
+        except ProcessLookupError:
+            pass
+        try:
+            os.waitpid(pid, 0)
+        except ChildProcessError:
+            pass
+        t.join(timeout=1.5)